As used in this article, unless the context requires a different meaning:
"Pollution prevention" means eliminating or reducing the use, generation or release at the source of environmental waste. Methods of pollution prevention include, but are not limited to, equipment or technology modifications; process or procedure modifications; reformulation or redesign of products; substitution of raw materials; improvements in housekeeping, maintenance, training, or inventory control; and closed-loop recycling, onsite process-related recycling, reuse or extended use of any material utilizing equipment or methods which are an integral part of a production process. The term shall not include any practice which alters the physical, chemical, or biological characteristics or the volume of an environmental waste through a process or activity which itself is not integral to and necessary for the production of a product or the providing of a service, and shall not include treatment, increased pollution control, off-site or nonprocess-related recycling, or incineration.
"Toxic or hazardous substance" means
Va. Code § 10.1-1425.10